Safety-razor.



0. J. KIEFER.

SAFETY RAZOR.

APPLICATION IILBL MAY 21, 190s.

Patented Nov. 14, 1911.

mit @aoco CHARLES J. KIEFER, 0F TIFFIN, OHIO.

SAFETY-RAZOR.

Specification of Letters Patent.

Patented Nov. 14, 1911.

Application led May 21, 1908. Serial No. 434,017.

To all whom #may concern:

Be it known that I, CHARLES J. KIEFER, of-

Tiliin, inthe county of Seneca and in the State of Ohio, have invented acertain new and useful Improvement in Safety-Razors, and do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, in which-Figure 1 is a perspective view of a safety razor embodying my invention;Fig. 2 a similar view With a portion of the handle omitted, shown in aposition the reverse of that of Fig. 1; Fig/8 a section on the line 3- 3of Fig. 1; Fig. 4 a cross section on the line '4l-4e of Fig. 3; and Fig.5 a perspective view of the parts of the razor shown separated from eachother.

The object of my invention is to provide a safety razor which may besuccessfully used upon all portions of the face, notwithstanding thegreat variety of conditions presented due to the almost infinitevariation of features and facial formations.v and to provide a safetyrazor of as few parts as possible, and one in which the assemblage andseparation of the parts may be done very convenientlyv an'd mostexpeditiously, and to these ends my invention consists in the safetyrazor constructed substantially as hereinafter specified and claimed.

In constructing a safety razor in accordance with my invention', I.employ a .blade 10 of sheet metal, preferably suliiciently thick as torequire some pressure to bend it, so as to give it a concavo-convex formlengthwise, or from end to end, while transversely, or from side toside, it is straight, and two plates designated 11 and 12, respectively,each of which is of the concave-convex curvature from end to end, whichI desire to give to the blade, and between which it is clamped or heldsoas to give to theblade such curvature, and to maintain it therein, solong as the parts are united together, as hereinafter described. Theoutermost plate 11 is narrower than the blade 10, to expose both edgesof the'blade, since I preferably provide it with a. cutting edge on bothsides,

`jacent corner of the blade.

and the inner plate, which has its two edges formed into or providedwith the usual guard teeth or lingers 13, is, including the fingers,slightly wider than the blade as usual. In order to prevent scratchingor cuttingby the corners of the blade, the outer plate 11 at each corneris provided-with a tongue or projection 14 that overlies the ad- At oneend, at about its transverse center, the outer plate 11 has on its innerside a stud or lug 15 which is under cut-to form a laterally projectingshoulder or lip 16, and in one end of the blade and in one end of theinner plate, are formed notches 17 and 18, respectively, of a size tosnugly lit over the reduced. portion of the lug or stud so that theunder or concave surface of the inner plate wi be overlapped by the lipor shoulder, and thereby the two plates andblade secured together at oneend. At its other end the outer plate has on its inner side, preferablyat its transverse center, around stud or post 19, and the blade andinner plate are provided with round holes 20 and 21, respectively,located to pass over said stud or post, and upon the latter, beyond theunder surface of the inner plate, when it is pressed toward the outerplate to force the blade thereagainst, is a radial projection or lug 22,which lug is preferably located on the side of the stud toward thecontiguous end of the razor. The blade and inner plate are slotted toenable them topass over the lug radial lug, and at its outer end it hassuiiicient thickness to tightly or snugly t the space between' theradial lug 22 andthe inner plate 12, when the latter is in the positionto press the blade close against the outer plate, so that by slipping orpassing v the handle -arm'23 over the stud or post to place it in theposition just described,.and

- blade inthe curved condition I have hereinbefore described, Tolcckthehandle immovably in position against accidental displacement, whichposition is one located centrally 'of the blade, I provide a latch whichconsists of a boss `or projection 26 on'the outer or concave side of theinner plate, which has across its face a groove or channel that extendslongitudinallyl of the plate, to form latching shoulders or lips onopposite sides between which a portion of the`handle carrying arm may beseated, and the lrandle and its arm thereby. held L from being acci-,vdentally turned or swung on its pivotal connection vwith the stud orpost 19. The hardle-carrying arm 23 is thinned or reduced in thicknessfor a portion of its length, be,\

. yond the stud or post, in order to make it elastic or springy, with anormal 'tendency toward the inner plate, so that when seated between thelips of the boss or lug, it will tend to remain there, and will requiresome effort by a pull on the handle to disengage it from the boss topermit it to be revolved on the stud or post when it is desired toremove the locking arm from the stud or post toenable the parts oftherazor to be disi connected. The outer sides of the latchformmg boss orprojection are rounded or 35 vinclined so that the arm-when it is turnedto locking position willk readily pass over the latch-forming lips andsprlng into the recess or channel between them. When the locking arm isin locking position, the radial portion of its key-hole slot isdiametrically opposite the radial lug on the stud or post, as ,Il prefer`to have the .lug and radial slotlof the respective parts'as far apartas-possible, when the locking bar is in its locking position, but ofcourse I do not restrict myself to this relative location of the lug andradial portion of the slot. The security of the locking bar or arm inits locking position is due both to the spring action of'the arm or bar,and that of the blade, for, it will be remembered, that the blade whenclamped between the two plates is bowed or placed under tension. It willbe evident that the lo'ckingand unlocking of the parts may be doneinstantaneously, and by' reason of the leverage which the handleaffords, the spring action or force may be considerable,'so as toeliminate any danger during the use of the razor of the accidentalseparation of the parts, and as by reason of-my form of securing andlocking device,.the razor blade is'always and invariably placed and heldin the proper posi- -tionfor use, there is nodanger Whatever,

example, to unlatch the parts,the assembled.

plates and blade may be grasped by thc thumb of. one hand 'engaging saidlug and the'. forefnger engaging the outer plate, and the handle beingtaken by the other hand,

the latch arm or bar may be disengaged from the boss or projection 26and revolved to permit its separation from the stud or post 12X- Theinstant the latch bar or arm is disengaged lfrom the stud or post, theblade being freed from restraint, will spring away from the concave sideof the outer plate, assuming its straight form, and will force thestud-engaging end of the ,inner plate outward and away therefrom, s othat the parts Willr be sutlicient'ly spread apart or separated at oneend, while still held by the thumb and forefinger at theotherend, as toenable theirmost convenient separa- "tion or removal. To facilitate theremoval of the blade from the stud or post, the blade at its endcontiguous to the latter, is provided with a sort of handle or extension27,

which protrudes beyond the end of the outer plate so that it may bereadily grasped.

It Will be seen that by the curvature which I give the cutting edge ofthe blade, which is in a longitudinal direction, or fromend to endthereof, configurations of the face which render. portions thereofinaccessible to a straight edge, may be otten at and perfectly shaved,and to still further increase the availability of the razor forperfectly successful operation, regardless of the facial configuration,the direction vof the cutting edge of the blade is oblique or inclined,and preferably at anangle of about 45 to the longitudinal axis-of' thehandle, and to secure this position, the handle carrying latchformingbar is set at the desired angle to the handle axis. As a result of thecombination of the longitudinally curved cutting edge and the angular oroblique arrangement of such edge, my razoris adaptable for perfectlysuccessful use on faces of all description, and in the use of my razorthe outer blade-holding plate is. applied directly to Athe .face andmoved over the skin While extended contact therewith, so that there 1sno rasping or scraping action of the edge o f the blade over the face,and I am -able to shave with thedesirable shear cut. The conouter platewith the skin produces a pleas- Vtact of the extended metal surfaceofthe y said clamping engaging the other plate at a case 4when the edgeof the blade is .drawn4 over the face in a scraping-like operation. Inorder to adapt the same blade for shaving with varying degrees ofcloseness, the cutting edge may be ground at different angles or bevelson opposite sides, a narrow bevel giving a closer shave than a widerbevel.

While I prefer to construct my rapor with all the features I show anddescribe, it will be understood that razors mayy be constructed whichwill embody my invention even though in one razor there may not becontained all the features herein shown and described, and the scope ofmy patent is to be determined in the light of this statement.

Having thus described my invention, what I claim is- 1. In a safetyrazor, the combination of a blade, a blade-supporting plate, a handlepivotally connected to said plate, a blade clamping plate, and a holdingarm attached to and moving with the handle and engaging plate on theside opposite that engaging the blade.

2. Ina safety razor, the combination of a blade, a blade supportingplate, a post projecting from said plate having a shoulder, a,

holding armrotatably mounted onvthe post, a handle carrying said arm anda bladeclamping plate engageable by said arm.

3. In a safety razor, the combination 0f a blade, plates on oppositesides thereof, a post projecting from one of said plates, and having ashoulder, and an arm to hold said parts together, rotatably mounted onsaid-post on the inner lside ofthe shoulder and movable into and out ofcontact with the plate not provided with the post.

4. In a safety razor, the combination of a blade, plates on 'oppositesides thereof, and means to hold said plates together comprising aconnected handle and arm rotatably connected with one of said-plates,the arm point eccentric to itscenter of rotation. Y

5. The combination of a blade holder, comprising blade-clamping members,a pivoted arm and holding means for said arm comprising interlockingsurfaces eccentric to the center of motion of the arm, the swingingmovement of 4the arm being relative to th` blade-clamping members. v

- 6. The combination of a blade holder,com`

prising-.blade-clamping members, al pivoted` ar1 n and holdingmeansfor'said arm comprising an arm-,engaging recess ina part stationaryrelativeto Ithe arm, and located ec- A centrically to the center ofmotion thereof,

the swinging movement of the. arm being relativeto the blade-clampingmembers.

7. The combination of ablade holder comprising blade-clamping members, apivoted farm and holding means for said arm comprising an arm-engagingrecess in apart stationary relative to the arm, and located ec;

.centrically to the center of motion thereof,

prising blade-clamping members, a pivoted arm and holding means forsaidl arm, comprising interlocking surfaces eccentric to the centerlofmotion of the arm, the arm being movable in a directlon at right anglesto its lade-clamping swinging movement to cause the engagement fanddisengagement of saidinterlocln'ng surfaces, the swlnging movement ofthe arm be-I ing relative to the blade-clamping members.

9. A safety razor comprising a blade, and clamping plates that engageopposite sides of the blade, whose surfaces in contact there? with arerespectively concave and convex in a direction lengthwise of the blade,forming a cutting edge that is curved lengthwise of the blade the convex'portion of the curve being applied to the surface to beshaved,

and means to hold said parts together.

10. A safety razor comprising a blade, and clamping plates that engageopposite sides of the blade, whosesurfaces in contact therewith arerespectively concave and con- Vex in a direction lengthwise of theblade, forming a cutting edge that is curved length- Wise of the blade,and means to hold said parts together, comprising Aa spring lat-ch barand a bar-engaging shoulder.

11. In a safety razor, the combination of I a blade, a supporting plate,a post having a shoulder, locking arm rotatably mounted on the postbetween the post shoulder and the supporting plate, and a .bladeengaging clamping member between said locking arm 12, In a safety'razor,the combination vof a blade, plates, on opposite sides thereof, a

post project-ing from one of said plates throughlopenings in the bladeand the other I plate, and having a'lug or shoulder, a bar to hold saidparts together, rotatably mounted on said post and coacting with saidshoulder, and a handle from which said bar projects.

13. In a'safety razor, the combination of a blade, plates on oppositesidesthereof, the surfaces of said plates engaging the blade beingrespectively concave and convex, and the blade, being.thereby kept undertension to cause it to havea spring action, a post projecting from oneof said plates through openings in the bladeand the otherplate, andhaving a lug or shoulder, and a bar to hold said, parts together,rotatably mounted on said post and coacting with said shoulder.

14. In a safety razor, the combination of a blade, plates on oppositesides thereof, the surfaces of said plates engaging the blade lbeingrespectively concave and convex, .and

the-blade being thereby kept under tension on seid post and eo-a,ctingwith said'shoulto Cause it to have a spring action, a lug on der. 10 oneof Saidplatesfnotehes in the blade. and In testimony that Iclaim theforegoing the other plate to lengage said lug, a post have hereunto setmy hand.

projecting from one of said plates through CHAS.- J. KIEFR. i opening inthe blade and the other plate, Witnesses: and having a lug or shoulder,and a bar to CLYDE B. WEIKERT.

hold said parts together, rotatably mounted CHAS. J. WILLIAMSON.

